Elements, Compounds and Mixtures

What is Brownian Motion?

All matter is made of tiny particles.
The particles are atoms, ions or molecules.
In a liquid or gas, the particles move at random.

The random motion of particles is called Brownian Motion.
It can be seen by looking at
smoke particles in air through a microscope.

Brownian Motion

The smoke particle (shown as a blue ball) has a jerky motion.
As (invisible) air molecules collide with the smoke particle,
they push it about in different directions at random.

back      Links      Solid      Liquid      Gas      Revision Questions      next

gcsescience.com     The Periodic Table      Index      Chemistry Quiz    gcsescience.com

Home      GCSE Chemistry      GCSE Physics

Copyright © 2014 Dr. Colin France. All Rights Reserved.